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Plant-growth in Heated Soils

Published online by Cambridge University Press:  27 March 2009

Spencer Umfreville Pickering
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Extract

The existence of a toxic substance in heated soils, and the coexistence of two changes of an opposite character when such soils are kept—the one resulting in the oxidation and destruction of the toxin, the other in an increase of the soluble organic matter present—seem to offer an explanation of certain anomalies which have been observed in the growth of plants in these soils, to which allusion has already been made; provided, always, that this toxic substance is toxic towards plant-growth in the same way as it has been found to be toxic towards seed-germination.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 3 , Issue 3 , September 1910 , pp. 277 - 284
Copyright
Copyright © Cambridge University Press 1910

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References

Page 277 note 1 Pickering, Journ. Agric. Sci. Vol. III. p. 43.Google Scholar

Page 277 note 2 Darbishire and Russell, ibid. Vol. II. p. 303.

Page 277 note 3 Russell and Hutchinson, ibid. Vol. III. p. 111.

Page 277 note 4 Pickering, ibid. Vol. II. p. 434.

Page 280 note 1 The photographs have had to he reduced to different extents in different cases: the pots were all of the same size, and a two foot rule is shown in each figure.

Page 281 note 1 This Journal, II. 434.Google Scholar

Page 282 note 1 The records of the inorganic matter have been lost.